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TM 5-4120-377-14
e. Adjust louvers to suit. Since warm air tends to rise, it is normally better to adjust the conditioned air outlet
louvers slightly downward. The conditioned air inlet louvers should be full open.
AIR
CONDITIONED
OUTLET LOUVER
EACH BLADE CAN BE
ADJUSTED
INDIVIDUALLY BY HAND
CONDITIONED AIR INLET
LOUVER BLADES
ADJUSTED AT LEVER
TS4120-377-14/2-10
Figure 2-10. Louver Adjustment
NOTE
An overheat thermostat located near the heating elements
temperature in the heater compartment reaches an excessive
2-10. OPERATION IN HI HEAT MODE
will turn them off if the
level.
In the HI HEAT mode, six heaters are activated. Three are thermostatically controlled. Three operate all of the
time.
a. Turn
b. Turn
mode selector switch to HI HEAT.
Temperature control thermostat knob as far as it will go in the INCREASE (warmer) position.
TS4120-377-14/2-11
Figure 2-11.
HI HEAT Control Setting
2-16
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